Each culture has its own halvah, united only by nameâwhich derives from the Arabic word for âsweetââand the fact that each is a sweetened candy or dessert, often an ancient and beloved recipe. A trip to Israel is not complete without sampling the countryâs halvah.
The amount of vitamin D you get from exposing your bare skin to the sun depends on: 1  The time of day â your skin produces more vitamin D if you expose it during the middle of the day. 2  Where you live â the closer to the equator you live, the easier it is for you to produce vitamin D from sunlight all year round.
Supplements make sense for people who know or suspect that they're lacking in vitamin D. For adults,1,000-2,000 IUs (international units) as a supplement is good for maintenance. If you are vitamin D inadequate, you're going to need a higher dose for a short period of time to build up your levels.